Method of assembling and installing equipment



Dec. 2, 1941. P. ROHR ETAL METHOD OF ASSEMBLING AND INSTALLING EQULFPMENT Filed Nov. 23, 1938 3 Sheets-Sheet l Dec. 2, 1941. P. ROHR ETAL METHOD OF ASS EMBLING AND INSTALLING EQUIPMENT 3 Sheets-Sheet 2 Filed Nov. 23, 1958 Dec. 2, 1941.- P. ROHR ET AL 2,264,408

METHOD OF ASSEMBLING AND INSTALLING EQUIPMENT Filed Nov. 23, 1958 5 Sheets-Sheet 3 Patented Dee. 2.1 941 Q UNITED. STATES PATENT OFFICE METHOD OF ASSEMBLING AND INSTALLING EQUIPMENT Paul Riihr, Werner Hofmann, Bruno Stirke, Johann Haseloif, and Franz Schriiter, Dessau, Germany, assignors to Junkers Flaming-und- Motorenwerke Aktiengesellschaft, Dessau, Germany, a corporation of Germany Application November 23, 1938, Serial No. 241,934 In Germany November 24, 1937 1 Claim. (CI. 72-46) This invention relates to a method of assemiects and advantages of the invention, we will bling and installing equipment, such as wiring, now proceed to describe two preferred ways or electrical or piping installations which are to in which it may be employed with the aid of the be mounted in chambers of limited size such as accompanying drawings, in which: many of those usually found on aircraft. Figure 1 illustrates a perspective view of a fix- Until now it has been customary when assemture whereon the carrier means consists of sepbling and installing such equipment in chambers arate spacing members, and some at least of the of limited size, such as those found in the wings parts are secured to each spacing member.

and other parts of airplanes, to take each sep- Figure 2 is a perspective view of the assembly arate part, such as wire, switches, pipe, connecshown in Figure 1 after its removal from the tions and the like, into the chamber and to as- I fixture.

semble and erect them there. It is also usual Figure 3 is a perspective view of the same asto bend and shape thinner, more delicate parts sembly secured in position in a relatively small in the chamber to fit the various positions in, chamber in an airplane.

the assembly which they are to occupy prior to 5 Figure 4 is a perspective view showing one of securing them in place. Many chambers on airthe spacing members and some of the pipes being craft where such equipment must be installed are mounted thereon.

so small that only one man can work therein at Figure 5 is a perspective view showing a modia time, and he must work under difficulties and fled arrangement comprising a fixture whereon in cramped quarters, with the result that only 2( the carrier means consists of a continuous rigid very slow progress is made, and the cost of such conduit to support the equipment.

installations is often quite excessive. Figure 6 is a perspective view of the assembly It is an object of the invention to provide a shown in Figure 5 after its removal from the method of assembling and installing equipment fixture.

in a relatively small chamber so that the work Figure '7 is a perspective view of a portion of can be more quickly and economically performed, an airplane'the assembly shown in Figure 6 being and consists of a method whereby the various indicated in a chamber formed in the airplane parts are assembled outside the chamber and portion;

rigidly secured in their required spaced relation Referring first to Figures 1 to 4 of the drawto one another, and the assembly is then trans- 3O ings, 0 denotes a fixture or'construction frame ported into the chamber and mounted in position. upon which a carrier means'is secured for sub- Another object of the invention is to provide sequent detachment after the various parts which a method of assembling and installing equipment form the assembly have been assembled upon the in a relatively small chamber-consisting of uticarrier means and are held thereby in their relizing a fixture, or construction frame, outside the quired spaced relation. chamber, detachably supporting carrier means In this case the carrier means consists of a on the fixture, and securing the various parts of plurality of separate spacing members 5 having the equipment in their required spaced relation outwardly stepped extremities through which to one another to the carrier means to form a apertures iii are formed for the passage of rerlgid unit, and, afterdetaching the unit from 40 movable fastening means therethrough for temthe fixture, transporting the unit into the champorary attachment of the member to the fixture her and securing it therein in its desired posi- Ill. ,The various parts of the assembly, consisttion. This method is applicable both to asseming in this case of pipes I and their fittings and .biies of strong, rigid parts, such as pipes, which connections, are cut, shaped and connected as rewill form a rigid unit with the carrier means if quired and placed to extend through depressions the latter only consist of one or a plurality of 4 formed in the members by which they are supseparate spacing members to each of which at ported in their required relative positions to one least some of the parts are secured, after removal another.

. some of the parts at least are too weak to retain of the unit from the fixture; or in the event that A clamping bar 6 is then secured upon each member 5. This form of assembly is permitted the unit in shape as a rigid entityafter its reby the fact that the pipes I and their fittings and moval from the fixture, the carrier means may connections are strong enough to retain the memconsist of a continuous rigid conduit upon or bers 5 at their correct spa ng after removal of within which the various parts are secured. the latter from the fixture l0. Thu a rigi Having thus briefly described some of the obsembly unit has been made the transportation of which may be safely undertaken without fear of displacement of any of the' parts. The unit is, after its removal from the fixture, moved into the chamber wherein it is to beinstalled, such as the chamber I2.

If the members 5 are to-form a permanent part of the assembly they may be employed as mounting means, in which case fastening means may be inserted through the apertures l3 to secure the unit in position in the chamber i2. Thus it will be seen that the assembly has been more conveniently accomplished, and the necessity for working in the cramped confines of the chamber I2 has been to a very large extent obviated.

Referring now to Figures 5 to 7. The carrier means, again temporarily mounted upon a fixture H, consists of a continuous rigid conduit comprising, in the present case, conductor troughs I, junction boxes la and an outlet lb. These parts I, la and 1b are all rigidly connected to one another to form a, continuous conduit of sufficient strength to retain its shape after removal from the fixture II and when the required parts have been mounted and assembled therein.

Wires 2 are mounted in the troughs l, and such parts as switches 8 and connectors 9 are mounted in the boxes la. The wires 2 are also connected to the parts to form the desired circuits. Some of the "wires 2 also extend through the outlet lb for subsequent attachment to other wires-not shown--after the conduit has been secured in position in its chamber 3. Covers I are then secured upon the boxes 1a and outlet lb and the conduit is detached from the fixture II and transported into the chamber 3 as a rigid unit and is installed in position therein. Thus in this case again it will be seen that the assembly has been materially simplified by permitting the work to be done outside instead of inside the chamher 3.

While in the foregoing two instances of the utilization of the method have been described and shown it is understood that the method may be employed for various modified forms of as-' semblies which are now usually made within the limited space afiorded in many small airplane chambers.

What we claim is:

A method of assembling and installing bend-'- .able conductor or tube elements of substantially stantially seli-sustaining composite unit in the chamber.

PAUL norm. FRANZ scHRoTER. WERNER HOFMANN. JOHANN HASELOFF. BRUNO s'riiRKE. 

